#include <stdio.h>
#include <stdlib.h>
double pi = 3.1415926535898;
int main(int argc, char *argv[])
{
int p, e, i, d;
int k1, k2, k3;
int days;
int cnt = 1;
while (true)
{
scanf("%d %d %d %d", &p, &e, &i, &d);
if (p==-1 && e==-1 && i==-1 && d==-1)
break;
p = p % 23;
e = e % 28;
i = i % 33;
k1 = k2 = k3 = 0;
days = (5544 * p + 14421 * e + 1288 * i - d) % (21252);
if (days <= 0) {
days = 23 * 28 * 33 + days;
}
printf("Case %d: the next triple peak occurs in %d days.\n", cnt++, days);
}
return 0;
}